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Core Data from the Deep Sea Drilling Project


Leg : 65    Top/Bottom Interval(mm):    0/ 850  Analyst: Zolotarev, B.
Hole: 482B  Sample Midpoint (m)    :   139.35
Core:  10   Top of Core Depth (m)  :   129.50
Sect:  7    Top of Section Depth(m):   138.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-10), 2 (12-18), 3 (21-29), 4 (32-35),
               5A (38-44), 5B (44-46), 6A (49-55), 6B (49-56),
               7A (59-67), 7B (59-65), 7C (65-67), 8 (70-75),
               9 (77-85);

  Texture    : PCES(1,2,3) ARE FINE-GRAINED, PCES 4-9 BECOME
               LIGHTER AND COARSER GRAINED, GENERALLY APHYRIC;

  Structure  : MASSIVE, VEINLETS UP TO 1.5MM FILLED WITH CALCITE
               AND LATER PYRITE IN PCES(1,2,6), PCES 1 & 2 HAVE
               1.5MM FRACTURES BORDERED BY ALTERATION HALOS OF 1CM
               WITH LOWER PART RICH IN SULFIDES;

  Alteration : FRESH
               SOME ALTERATION HALOS;

  Comments   : TOP OF PCE 1 IS OLIVE GREY SILTY CLAY-BASE OF SED
               SECTION, SOME SULFIDES DISSEMINATED THROUGHOUT ROCK
               BUT USUALLY AROUND ALTERATION HALOS, CORE IS PART OF
               LARGER COOLING UNIT, DARK GREY TO LIGHTER DOWN CORE;

  Vesicles   : Size(mm):    0.5-8   Percent:    <1
               Location:            Filling: CALCITE,ZEOLITE

               Location:            Filling: CLAY,PYRITE
               ID ZEOLITE UNCERTAIN,PYRITE IN UPPERMOST PCES;

  Phenocrysts: PLAGIOCLASE
               Size(mm):       TO 1
               PHENOS VISIBLE IN PCES 1 & 2, ACICULAR PLAG;

  Replacement: CALCITE

               ZEOLITE

               CLAY

               SULFIDES

               PYRITE
               PYRITE DISSEMBLED THROUGHOUT GROUNDMASS;


Leg : 65    Top/Bottom Interval(mm):    0/1400  Analyst: Morrison, M. Ann
Hole: 482B  Sample Midpoint (m)    :   138.40
Core:  11   Top of Core Depth (m)  :   137.00
Sect:  1    Top of Section Depth(m):   137.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-6), 2A (8-12), 2B (11-26), 2C (16-30),
               2D (29-37), 2E (38-46), 2F (46-55), 2G (54-60),
               3 (62-69), 4 (70-85), 5 (86-92), 6A (94-101),
               6B (100-111), 6C (111-117), 7 (118-125), 8 (127-129)
               9 (133-142);
               COARSE GRAINED, APHYRIC;

  Structure  : VEINS OF CALCITE IN PCES(2D-G,4,6) WITH THIN RIMS OF
               CALCITE ON VEINS, VEIN IN 2F-G ARE 1MM WIDE REST
               <0.5, MASSIVE;

  Alteration : FRESH
               NO MEASURABLE ALTERATION HALOS;

  Comments   : SAME UNIT AS 10-7, GREY;

  Vesicles   : Size(mm):            Percent:    <1
               Location:            Filling: SMECTITE,CALCITE
               SMALL VESTICLES SCATTERED THROUGHOUT MAINLY FILLED
               WITH SMECTITE AND CENTERS OF CALCITE IN THOSE
               >0.5MM;

  Phenocrysts: PLAGIOCLASE
               ACICULAR PLAG IN PCE 5;

  Replacement: CALCITE

               SMECTITE

               SULFIDE
               DISSEMINATED SULFIDES THROUGHOUT BUT MAINLY
               CONCENTRATED AROUND VEINS IN PCES(1,4,6);


Leg : 65    Top/Bottom Interval(mm):    0/1460  Analyst: Zolotarev, B.
Hole: 482B  Sample Midpoint (m)    :   139.96
Core:  11   Top of Core Depth (m)  :   137.00
Sect:  2    Top of Section Depth(m):   138.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-4), 2 (7-13), 3 (6-19), 4 (20-33),
               5A, (35-47), 5B (47-55), 5C (55-59), 6 (60-70),
               7 (71-90), 8 (93-100), 9 (101-114), 10 (116-120),
               11 (121-135), 12 (137-146);

  Texture    : FINE GRAINED, APHYRIC;

  Structure  : CALCITE VEINS CONTAINING SOME PYRITE IN PCES(5C,6,
               7,8), MASSIVE;

  Alteration : FRESH;

  Comments   : GREY, SIMILAR TO 10-7 & 11-1;

  Vesicles   : Size(mm):    0.5-2   Percent:   1-2
               Location:            Filling: CALCITE,ZEOLITE

               Location:            Filling: CLAY
               CLAY IS GREEN-BLUE, ID ZEOLITE UNCERTAIN;

  Replacement: CALCITE

               ZEOLITE
               ID ZEOLITE UNCERTAIN;

               CLAY

               PYRITE
               MINOR PYRITE DISSEMINATED IN GROUNDMASS;


Leg : 65    Top/Bottom Interval(mm):    0/ 340  Analyst: Morrison, M. Ann
Hole: 482B  Sample Midpoint (m)    :   140.34
Core:  11   Top of Core Depth (m)  :   137.00
Sect:  3    Top of Section Depth(m):   140.00

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCES 1 (0-8), 2 (12-23), 3 (25-44);

  Texture    : COARSE GRAINED, APHYRIC;

  Structure  : CALCITE-SMECTITE VEINS PCE 3 AND AT JUNCTION OF PCES
               1 & 2;

  Alteration : FRESH;

  Comments   : LIGHT GREY, SAME AS 10-7,11-1, 11-2;

  Vesicles   : Size(mm):   0.-1.5   Percent:    <1
               Location:            Filling: SMECTITE,CALCITE
               MECTITE LINED SOME WITH CALCITE CENTRES;

  Replacement: CALCITE

               SMECTITE

               SULFIDE


Leg : 65    Top/Bottom Interval(mm):    0/ 400  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   139.40
Core:  12   Top of Core Depth (m)  :   139.00
Sect:  1    Top of Section Depth(m):   139.00

LITHOLOGY: SEDIMEMT;
           SILTY CLAY;

  Piece No.  : PCE 1 (0-4);

  Comments   : OLIVINE GREY, NO SIGNS OF BAKING, NO CHANGE IN GRAIN
               SIZE OF ADJACENT BASALT;


Leg : 65    Top/Bottom Interval(mm):  500/1450  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   140.45
Core:  12   Top of Core Depth (m)  :   139.00
Sect:  1    Top of Section Depth(m):   139.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 2 (5-10), 3A (12-15), 3B (15-22), 4 (24-30),
               5 (30-38), 6 (42-44), 7A (46-50), 7B (51-54),
               8 (55-69), 9 (70-80), 10 (82-93), 11A (94-103),
               11B (103-114), 12 (115-122), 13 (124-130),
               14 (131-145);

  Texture    : APHYRIC;

  Structure  : PCES 10-14 CALCITE & SMECTITE VEINS, SMECTITE VEINS
               PCES 2 & 5-14, MASSIVE;

  Alteration : FRESH
               PCE 8 IS ALTERED WITH PATCHES OF SMECTITE AND SOME
               DISSEMINATED SULFIDE;

  Comments   : GREY, PCE 1 IS SEDIMENT;

  Vesicles   : Size(mm):    15-20   Percent:
               Location:          S Filling: MECTITE, SULFIDE
               PCE 5 HAS 4 VESICLES, PCE 6 HAS SEVERAL SMALL
               2-3MM VESICLES, PCE 7 HAS A LARGE 1CM AND SEVERAL
               SMALL ONES, VESICLE SURROUNDED BY SMECTITE AND
               DISSEMINATED SULFIDE;

  Phenocrysts: PLAGIOCLASE
               SINGLE PLAG PHENO FOUND IN PCE 14;

  Replacement: SMECTITE

               SULFIDE

               CALCITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Zolotarev, B.
Hole: 482B  Sample Midpoint (m)    :   142.00
Core:  12   Top of Core Depth (m)  :   139.00
Sect:  2    Top of Section Depth(m):   140.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;
           PCES 1A (0-20), 1B (20-38), 2A (40-47), 2B (47-54),
           2C (54-59), 3 (61-72), 4 (73-80), 5 (82-91),
           6A (95-105), 6B (105-116), 7 (117-121),
           8A (123-128), 8B (127-130), 8C (131-138),
           9 (140-150);

  Texture    : FINE GRAINED, APHYRIC;

  Structure  : VERY THIN CARBONATE VEINS IN PCES(1A-B, 2A-B, 4-5, &
               6B) WITH PCES 5 & 8A-B CONTAINING TRACE PYRITE,
               MASSIVE;

  Alteration : FRESH;

  Comments   : GREY, SAME UNIT AS 12-1;

  Vesicles   : Size(mm):   TO 0.5   Percent:
               Location:            Filling: CARB, CLAY
               CLAY NOT CERTAIN, ONLY TRACE VESICLES;

  Replacement: CARBONATE

               CLAY
               CLAY QUESTIONABLE;

               PYRITE


Leg : 65    Top/Bottom Interval(mm):    0/ 300  Analyst: Morrison, M. Ann
Hole: 482B  Sample Midpoint (m)    :   142.30
Core:  12   Top of Core Depth (m)  :   139.00
Sect:  3    Top of Section Depth(m):   142.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-7), 2 (9-21), 3 (24-29);

  Texture    : APHYRIC;

  Structure  : CALCITE VEINS IN ALL 3 PCES, MASSIVE;

  Alteration : FRESH;

  Comments   : GREY, SIMILAR TO 12-2;

  Vesicles   : Size(mm):            Percent:     0
               NO OBVIOUS VESICLES;

               Size(mm):  0.1-0.3   Percent:   <<1
               Location:            Filling: SMECTITE
               Shape   : ROUND
               VERY SMALL SMECTITE ROUND AMYGDULES UNDER
               BINOCULAR SCOPE;

  Replacement: CALCITE

               SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/1430  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   145.43
Core:  13   Top of Core Depth (m)  :   144.00
Sect:  1    Top of Section Depth(m):   144.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-12), 2 (16-22), 3 (23-33), 4 (34-42),
               5A (44-55), 5B (54-63), 5C (64-70), 5D (70-76),
               5E (77-88), 6A (90-100), 6B (98-109), 6C (109-119),
               6D (118-143);

  Texture    : APHYRIC, EQUIGRANULAR;

  Structure  : DISSEMINATED SULFIDE AND CALCITE IN FINE VEINS,
               MASSIVE;

  Alteration : FRESH;

  Comments   : CONTINUING FROM CORE 11-3, ORIENTATION UNKNOWN FOR
               PCE 2;

  Vesicles   : Size(mm):            Percent:  <0.5
               Location:            Filling: CALCITE,SMECTITE
               VESICLES ARE EXTREMELY RARE AND VERY SMALL, ID
               UNCERTAIN FOR SMECTITE;

  Replacement: CALCITE

               SMECTITE

               SULFIDE


Leg : 65    Top/Bottom Interval(mm):    0/1370  Analyst: Zolotarev, B.
Hole: 482B  Sample Midpoint (m)    :   146.87
Core:  13   Top of Core Depth (m)  :   144.00
Sect:  2    Top of Section Depth(m):   145.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-20), 2 (24-26), 3 (30-37), 4 (40-46),
               5 (52-57), 6 (60-64), 7 (70-77), 8 (80-82),
               9 (84-92), 10 (95-96), 11 (100-106), 12 (108-112),
               13 (116-118), 14 (122-127);

  Texture    : FINE GRAINED, APHYRIC, PCE 4 IS FINE GRAINED;

  Structure  : PCE 1 HAS CARBONATE VEIN WITH TRACE PYRITE, MASSIVE;

  Alteration : FRESH;

  Comments   : GREY, PCE 4 IS TOP OF COOLING UNIT AND FINE GRAINED;

  Vesicles   : Size(mm):    0-0.2   Percent:
               Location:            Filling: CARB,CLAY
               SMALL VESICLES, CLAY IS BLUE GREY;

  Replacement: CARBONATE

               CLAY
               CLAY IS BLUE GREY;

               PYRITE                    (   TR%)
               ONLY IN CARBONATE VEIN;


Leg : 65    Top/Bottom Interval(mm):    0/ 900  Analyst: Morrison, M. Ann
Hole: 482B  Sample Midpoint (m)    :   148.90
Core:  14   Top of Core Depth (m)  :   148.00
Sect:  1    Top of Section Depth(m):   148.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-5), 2 (7-10), 3A (12-20), 3B (20-26),
               3C (26-30), 4 (32-35), 5 (36-41), 6 (43-45),
               7 (47-52), 8 (54-61), 9 (63-66), 10 (67-70),
               11 (73-77), 12 (80-83), 13 (85-90);

  Texture    : APHYRIC, BECOMES FINE GRAINED PCES 8-13 WITH 13 FINE
               GRAINED, PCES(8,9,13) HAVE SMALL AND SPARSE
               GLOMEROPHYRIC CLUSTERS OF PLAG AND CPX(2X1.5MM IN
               PCES 8 & 9, & 3.5X4.5 IN PCE 13);

  Structure  : CALCITE-SMECTITE VEIN IN PCE 13, MASSIVE;

  Alteration : FRESH;

  Comments   : INTERPRETED AS TOP OF COOLING UNIT 3(APPEARS TO BE
               CONTINUATION OF UNIT IN CORE 13), PCE 5 IS FINE-
               GRAINED-TOP OF COOLING UNIT 4, GREY BUT DARKENS
               IN COLOR FROM PCES 8-13, SMECTITE AT BASE OF PCE 13;

  Vesicles   : Size(mm):            Percent:     0
               SULFIDE FILLED VUG IN PCE 1;

  Phenocrysts: PLAGIOCLASE

               CLINOPYROXENE

  Replacement: CALCITE

               SMECTITE


Leg : 65    Top/Bottom Interval(mm):  910/1500  Analyst: Morrison, M. Ann
Hole: 482B  Sample Midpoint (m)    :   149.50
Core:  14   Top of Core Depth (m)  :   148.00
Sect:  1    Top of Section Depth(m):   148.91

LITHOLOGY: APHYLIC BASALT;

  Piece No.  : PCES 14 (91-99), 15 (101-106), 16 (110-112),
               17 (115-122), 18 (124-126), 19 (132-137),
               20 (140-146);

  Texture    : APHYLIC, FINE GRAINED, PCE 14 HAS GLASS ON TOP
               MARGIN;

  Structure  : SMECTITE COATING ON ALL JOINTS AND FRACTURES
               EPECIALLY IN PCES 16 & 20;

  Alteration : FRESH;
               PCES 16 & 20 VERY ALTERED;

  Comments   : RUBBLY, GREY;

  Vesicles   : Size(mm):            Percent:     0

  Groundmass : PLAGIOCLASE
               ACICULAR PLAG;

  Replacement: SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   151.00
Core:  14   Top of Core Depth (m)  :   148.00
Sect:  2    Top of Section Depth(m):   149.50

LITHOLOGY: APHYLIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-6), 2 (8-15), 3 (17-20), 4A (25-29),
               4B (29-32), 5 (33-40), 6 (42-45), 7 (46-50),
               8 (52-57), 9 (59-63), 10 (70-76), 11 (85-90),
               12 (93-100), 13 (102-104), 14 (109-115),
               15 (125-132), 16 (134-143), 17 (145-147);

  Texture    : APHYRIC, FINE GRAINED, PCE 16 HAS A FRESH GLASS
               RIND, PCE 1 HAS PLAG-CPX GLOMEROCRYSTS PRESENT AS
               SMALL CLOTS, PCES(9,10,13,14)-LOOSE FRAGMENTS;

  Structure  : PCES(2,3,9 ETC.) ARE FRACTURE SURFACES COATED BY
               GREEN SMECTITE, FINE VEINLETS IN LOWEST PART ARE
               UNFILLED -CALCITE & SILICA RARE, MASSIVE;

  Alteration : FRESH
               ALTERED SURFACES LARGELY CONFINED TO THE UPPER
               COOLING MARGIN IN PCE 1(ALTERED GLASS);

  Comments   : PCE 1 IS BEGINING OF NEW COOLING UNIT;

  Vesicles   : Size(mm):            Percent:     0
               OR VERY RARE;

  Groundmass : PLAGIOCLASE

               CLINOPYROXENE

  Replacement: CALCITE

               SILICA
               IO FOR SILICA UNCERTAIN, CALC & SILICA VERY RARE;


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   152.50
Core:  14   Top of Core Depth (m)  :   148.00
Sect:  3    Top of Section Depth(m):   151.00

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCES 1 (0-7), 2A (9-11), 2B (11-17), 2C (17-20),
               3 (21-27), 4 (30-40), 5 (42-60), 6 (60-66),
               7 (68-74), 8 (77-82), 9 (83-90), 10 (93-97),
               11 (100-116), 12 (108-118), 13 (120-131),
               14 (133-137), 15 (140-143), 16 (146-150);

  Texture    : MOTTLING OF CUT SURFACES PROBABLY REPRESENT

  Piece No.  : GROUNDMASS GLOMEROPHYRIC CLOTS OF PLAG-CPX;

  Structure  : PCES ARE FRAGMENTED, JOINT PLANES OFTEN COATED WITH
               GREEN SMECTITE AND CHALCEDONY(?), FINE VEINS RARELY
               FILLED BY CALCITE, PCES (3-5,11) HAVE THICK SMECTITE
               COATINS ON JOINTS;

  Alteration : FRESH
               INTERIOR OF JOINTS-PCES(3-5,11) APPEAR TO BE
               FRESH

  Comments   : LITHOLOGY CONTINUES FROM PREVIOUS CORE SECTION;

  Groundmass : PLAGIOCLASE
               ACICULAR PLAG VISIBLE;

               PYROXENE
               GLOMEROPHYRIC CLOTS OF PLAG-PYX;

  Replacement: SMECTITE

               CALCITE


Leg : 65    Top/Bottom Interval(mm):    0/ 900  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   153.40
Core:  14   Top of Core Depth (m)  :   148.00
Sect:  4    Top of Section Depth(m):   152.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-6), 2 (10-15), 3 (16-22), 4 (25-29),
               5 (31-36), 6 (40-52), 7 (52-57), 8 (60-65),
               9 (67-72), 10 (75-80), 11 (84-90);

  Texture    : APHYRIC, SIMILAR O 14-3 BUT COARSER GRAINED, PCE 11
               IS SLIGHTLY FINER GRAINED;

  Structure  : CALCITE-SMECTITE VEINS IN PCES(1,5-7), SMECTITE
               ON JOINTS AND FRACTURE, PCE 9 HAS LARE VUG/VEIN
               WITH SMALL BRECCIATED BASALT FRAGMENTS INSIDE REST
               OF FILLING IS MAINLY SMECTITE, MASSIVE;

  Alteration : FRESH;

  Comments   : GREY, NO OBVIOUS PHENOS OR VESICLES;

  Vesicles   : Size(mm):            Percent:     0
               PCE 9 HAS LARE VUG/VEIN;

  Replacement: SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/  50  Analyst: Schmincke, H.
Hole: 482B  Sample Midpoint (m)    :   157.05
Core:  15   Top of Core Depth (m)  :   157.00
Sect:  1    Top of Section Depth(m):   157.00

LITHOLOGY: SEDIMENT;
           OLIVE MUDSTONE;

  Piece No.  : PCE 1 (0-5);

  Comments   : % PROBABLY FALLEN IN FROM SEDIMENTARY SECTION;


Leg : 65    Top/Bottom Interval(mm):  700/1140  Analyst: Schmincke, H.
Hole: 482B  Sample Midpoint (m)    :   158.14
Core:  15   Top of Core Depth (m)  :   157.00
Sect:  1    Top of Section Depth(m):   157.70

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCS 2 (7-11), 3 (13-19), RA (21-25), 4B (24-31),
               5 (34-39), 6 (40-43), 7 (45-52), 8 (52-56),
               9A (60-70), 9B (67-73), 10 (75-80), 11A (82-87),
               11B (88-92), 12 (95-101), 13 (103-105),
               14A (107-111), 14B (108-114);

  Texture    : MEDIUM TO FINE GRAINED, APHYRIC;

  Structure  : CARBONATE & ZEOLITE(?) AND BLUE-GREEN CLAY(?) ALONG
               SOME IRREGULAR APPROX. 1MM FRACTURES;

  Alteration : FRESH;

  Comments   : GREY, SIMILAR BUT FINER-GRAINED THAN 14-4, PROBABLY
               BASAL PART OF VERY THICK COOLING UNIT;

  Vesicles   : Size(mm):       <1   Percent:    <1
               Location:            Filling: CARB/CLAY
               ID CARB UNCERTAIN;

  Replacement: CARBONATE

               ZEOLITE

               CLAY
               CLAY IS BLUE-GREEN;


Leg : 65    Top/Bottom Interval(mm): 1160/1500  Analyst: Schmincke, H.
Hole: 482B  Sample Midpoint (m)    :   158.50
Core:  15   Top of Core Depth (m)  :   157.00
Sect:  1    Top of Section Depth(m):   158.16

LITHOLOGY: PLAG PHYRIC BASALT;

  Piece No.  : PCES 15A (116-120), 15B (121-126), 15C (125-130),
               15D (131-134), 16 (135-140), 17A (141-147),
               17B (146-148), 17C (148-150);

  Texture    : FINE GRAINED, PHYRIC, GREENISH SMECTITE AND SULFIDE
               POSSIBLY ARE COATING OF HIGHLY ALTERED GLASS RINDS
               INTERPRETED AS FINE GRAINED TOP SELVAGE TO THICKER
               UNDERLYING PLAG-PHYRIC COOLING UNIT 9, IN SMALL
               FRAGMENTS;

  Structure  : SOME GREENISH SMECTITE AND SULFIDE ALONG THIN
               FRACTURES;

  Alteration : FRESH;

  Comments   : DARK GREY, INTERPRETED AS THICKER UNDERLYING COOLING
               UNIT 9;

  Phenocrysts: PLAGIOCLASE               (   <2%)
               Size(mm):         <3

  Replacement: SMECTITE
               GREENISH

               SULFIDE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Schmincke, H.
Hole: 482B  Sample Midpoint (m)    :   160.00
Core:  15   Top of Core Depth (m)  :   157.00
Sect:  2    Top of Section Depth(m):   158.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-10), 2 (12-20), 3 (22-30), 4 (33-41),
               5 (43-51), 6 (54-60), 7 (63-70), 8A (73-75),
               8B 75-77), 8C (77-82), 8D (84-86), 9 (87-97),
               10A (99-102), 10B (102-115), 11A (116-121),
               11B (116-120), 11C (122-130), 11D (127-142),
               12A (144-145), 12B (146-150), 12C (144-150);

  Texture    : FINE TO MEDIUM GRAINED, BECOMES COARSER DOWN
               SECTION;

  Structure  : FRACTURES ARE RARE AND THIN WITH CLAY & CARBONATE &
               ZEOLITE(?) & SOME LATE STAGE SULFIDE, MASSIVE;

  Alteration : FRESH;

  Comments   : SECTION PROBABLY PART OF THICK COOLING UNIT THAT
               STARTS IN CORE 15-1 & CONTINUE INTO LOWER SECTIONS
               LIGHT TO MEDIUM GREY-COLOR BECOMES LIGHTER AND GRAIN
               COARSER AND VOLUME PERCENTAGE HIGHER (TO CA.
               10%, <1MM) DOWNWARDS IN SECTION;

  Vesicles   :
               Location:            Filling: CLAY
               SECONDARY MINERALS DOMINANTLY BLUISH-GREEN CLAY;

  Phenocrysts: PLAGIOCLASE               (   <1%)
               Size(mm):          <
               SCATTERED THROUGHOUT UNIT;

  Replacement: CLAY

               CARBONATE

               ZEOLITE
               ID ZEOLITE UNCERTAIN;

               SULFIDE
               LATE STAGE;


Leg : 65    Top/Bottom Interval(mm):    0/1400  Analyst: Schmincke, H.
Hole: 482B  Sample Midpoint (m)    :   161.40
Core:  15   Top of Core Depth (m)  :   157.00
Sect:  3    Top of Section Depth(m):   160.00

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (408), 2 (017), 3 (20-30), 4 (31-45),
               5 (46-56), 6 (57-66), 7 (70-77), 8A (81-87),
               8B (84-88), 9 (90-103), 10 (105-120), 11A (122-131),
               11B (131-140);

  Texture    : MEDIUM GRAINED, SLIGHT INCREASE IN GRAIN SIZE DOWN
               SECTION;

  Structure  : RARE HARILINE FRACTURES LESS ABUNDANT THAN OVER-
               LIYING UNIT 15-2, MASSIVE;

  Alteration : FRESH;

  Comments   : PART OF THICK COOLING UNIT INCLUDING PART OF 15-1,
               ALL 15-2, AND 15-4, LIGHT GREY;

  Vesicles   : Size(mm):            Percent:  5-10
               Location:            Filling: CLAY
               Shape   : ROUND
               BECOMELARGER(1-2MM) DOWNWARDS, CLAY IS BLUE
               GREEN;

  Phenocrysts: PLAGIOCLASE               (   <1%)
               Size(mm):       TO 5
               INCREASE IN SIZE DOWNWARDS;

  Replacement: CLAY


Leg : 65    Top/Bottom Interval(mm):    0/1450  Analyst: Schmincke, H.
Hole: 482B  Sample Midpoint (m)    :   162.95
Core:  15   Top of Core Depth (m)  :   157.00
Sect:  4    Top of Section Depth(m):   161.50

LITHOLOGY: PLAG MOD PHYRIC BASALT;

  Piece No.  : PCES 1A (0-7), 1B (7-20), 2 (23-27), 3A (30-37),
               3B (37-44), 3C (44-46), 4 (47-57), 5 (59-66),
               6A (70-84), 6B (85-91), 7A (94-97), 7B (98-102),
               8 (103-112), A (114-121), 9B (130-144);

  Texture    : MEDIUM GRAINED, PHYRIC,GLOMEROPHYRIC SEGREGATION OF
               PLAIOCLASE OBSERVED SOMEWHERE (PCE 6A);

  Structure  : FRACTURES RARE AND THIN IN PCES(5,6,9) & FILLED WITH
               LIGHT GREY MATERIAL(CLAY MINERALS?) WHICH CONTAIN
               TRACE PYRITE;

  Alteration : FRESH;

  Comments   : SAME COOLING UNIT AS 15-3, LIGHT GREY;

  Vesicles   : Size(mm):  0.5-0.2   Percent:  5-10
               Location:            Filling: CLAY,VOLCANIC

               Location:            Filling: GLASS
               GRAY-GREEN GRAY-BLUE MATERIAL AND VOLCANIC GLASS-
               ID UNCERTAIN;

  Phenocrysts: PLAGIOCLASE               (  3-5%)
               Size(mm):        1-3

  Replacement: PYRITE

               CLAY
               NOT CERTAINCLAY;


Leg : 65    Top/Bottom Interval(mm):    0/ 660  Analyst: Schmincke, H.
Hole: 482B  Sample Midpoint (m)    :   163.66
Core:  15   Top of Core Depth (m)  :   157.00
Sect:  5    Top of Section Depth(m):   163.00

LITHOLOGY: PLAG MOD PHYRIC BASALT;

  Piece No.  : PCES 1A (0-4), 1B (6-12), 2A (14-19), 2B (20-26),
               3(30-66);

  Texture    : MEDIUM GRAINED, MOD PHYRIC;

  Alteration : FRESH;

  Comments   : LIGHT GREY, LOWER PART OF COOLING UNIT BEGINING WITH
               BASE OF 15-1 THRU 15-5, BASAL PART IN SMALL BROKEN
               PIECES;

  Vesicles   : Size(mm):     TO 2   Percent:   <10
               Location:            Filling: CLAY
               Shape   : ROUND
               SMALLER ONES FILLED WITH DARK GREEN CLAY, LARGER
               WITH DARK CLAY RIM CENTRE LIGHT COLORED CLAY WITH
               SHRINKAGE CRACKS;

  Phenocrysts: PLAGIOCLASE               (   <5%)
               Size(mm):         <5

  Replacement: CLAY


Leg : 65    Top/Bottom Interval(mm):    0/1450  Analyst: Schmincke, H.
Hole: 482B  Sample Midpoint (m)    :   167.45
Core:  16   Top of Core Depth (m)  :   166.00
Sect:  1    Top of Section Depth(m):   166.00

LITHOLOGY: PLAG MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1A (2-9), 1B (10-14), 2 (17-24), 3A (27-34),
               3B (35-40), 4 (42-50), 5 (52-60), 6A (71-84),
               6B (82-90), 7 (92-102), 8 (104-110), 9 (114-122),
               10 (125-131), 11 (134-136), 12 (140-145);

  Texture    : MEDIUM GRAINED, PHYRIC, PCES 1A-B WITH GLASSY
               (SOMEWHAT ALTERED) CHILLED RINDS(1-2MM THICK);

  Structure  : RARE HAIRLINE FRACTURES, MASSIVE;

  Alteration : FRESH;

  Comments   : LIGHT GREY, PROBABLY PART OF NEW COOLING UNIT,
               PETRORAPHICALLY SIMILAR TO OVERLYING COOLING UNIT
               (15-1 TO 15-5);

  Vesicles   : Size(mm):       <1   Percent:    <5
               Location:            Filling: CLAY

  Phenocrysts: PLAGIOCLASE               (   <5%)
               Size(mm):         <5
               SOME GLOMEROCRYSTS MOSTLY PLAG, SOME CPX(?);

  Replacement: CLAY
               CLAY VARIES FROM DARKGREEN TO LIGHT;


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Zolotarev, B.
Hole: 482B  Sample Midpoint (m)    :   169.00
Core:  16   Top of Core Depth (m)  :   166.00
Sect:  2    Top of Section Depth(m):   167.50

LITHOLOGY: PLAG MOD PHYRIC BASALT;

  Piece No.  : PCES 1 (5-15), 2 (17-29), 3A (32-36), 3B (33-44),
               3C (45-57), 4A (60-71), 4B (72-80), 5 (82-105),
               6 (107-121), 7 (125-131), 8 (133-147);

  Texture    : MOD PHYRIC, MEDIUM GRAINED, PLAG & CPX GLOMEROPHYRIC
               SEGREGATION OBSERVED IN PCES(4A-B,5);

  Structure  : FRACTURES IN PCES(1,2,8) NOT SO RARE & THIN FILLED
               WITH CLAY;

  Alteration : FRESH;

  Comments   : ALL SAMPLES SAME AS 16-1, LIGHT GREY;

  Vesicles   : Size(mm):  .5 TO 2   Percent:    <5
               Location:            Filling: CLAY, CARBONATE

  Phenocrysts: PLAGIOCLASE               (  3-5%)
               Size(mm):        1-5

  Replacement: CLAY

               CARBONATE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   169.00
Core:  16   Top of Core Depth (m)  :   166.00
Sect:  2    Top of Section Depth(m):   167.50

LITHOLOGY: PLAG MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES A (2-13), 1B (12-16), 1C (17-25), 2A (28-35),
               2B (36-48), 3A (60-65), 3B (36-38), 4A (72-85),
               4B (84-90), 5 (91-98), 6A (102-104), 6B (104-106),
               7A (107-135), 7B (132-137), 8 (138-150);

  Texture    : MOD PHYRIC;

  Structure  : SMECTITE COATINGS ON FRACTURES AND JOINTS PCE 2 HAS
               WIDER VEIN(0.3MM DOWN CENTRE), MASSIVE;

  Alteration : FRESH;

  Comments   : ALL SAMPLES SIMILA TO 16-1 & 16-2, LIGHT GREY;

  Vesicles   : Size(mm):      1-2   Percent:   <<1
               Location:            Filling: SMECTITE

  Phenocrysts: PLAGIOCLASE               (   <5%)

  Replacement: SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   172.00
Core:  16   Top of Core Depth (m)  :   166.00
Sect:  4    Top of Section Depth(m):   170.50

LITHOLOGY: PLAG MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (1-15), 2 (17-34), 3 (37-54), 4 (57-63),
               5 (65-70), 6 (73-80), 7 (83-97), 8A (100-111),
               8B (110-125), 8C (125-136), 8D (136-149);

  Texture    : MOD PHYRIC, MEDIUM GRAINED;

  Structure  : VEINLETS OF CARBONATE PRESENT BUT RARE, MASSIVE;

  Alteration : FRESH
               SOME FAINT SMECTITE PATCHES IN GROUNDMASS;

  Comments   : CONTINUOUS FROM PREVIOUS CORE SECTION;

  Vesicles   : Size(mm):       <1   Percent:     1
               Location:            Filling: CARBONATE
               RARE;

  Phenocrysts: PLAGIOCLASE               (   <5%)
               Size(mm):          1

               CLINOPYROXENE
               CCASIONAL GLOMEROCRYSTS OF PLAG & CPX;

  Groundmass : OTHER
               SOME GLASSY &/OR-CPX RICH ZONES IN PCE 6;

  Replacement: CARBONATE

               SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/ 780  Analyst: Morrison, M. Ann
Hole: 482B  Sample Midpoint (m)    :   172.78
Core:  16   Top of Core Depth (m)  :   166.00
Sect:  5    Top of Section Depth(m):   172.00

LITHOLOGY: PLAG MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (2-9), 2 (11-15), 3 (17-23), 4 (25-30),
               5 (32-47), 6 (50-59), 7 (61-66), 8 (68-78);

  Texture    : MOD PHYRIC, SLIGHTLY COARSER GRAINED THAN 16-4;

  Structure  : SOME SMECTITE COATING ON JOINTS AND FRACTURES,
               MASSIVE;

  Alteration : FRESH;

  Comments   : VERY SIMILAR TO 16-4;

  Vesicles   : Size(mm):            Percent:     0

  Phenocrysts: PLAGIOCLASE               (   <5%)
               Size(mm):         <5

  Replacement: SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   176.50
Core:  17   Top of Core Depth (m)  :   175.00
Sect:  1    Top of Section Depth(m):   175.00

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (1-10), 2 (11-16), 3 (19-27), 4A (28-38),
               4B (28-40), 4C (41-42), 4D (42-47), 4E (47-55),
               5 (57-63), 6 (64-75), 7A (76-78), 7B (77-90),
               8 (92-104), 9 (105-120), 10 (121-125), 11 (127-136),
               12A (133-137), 12B (137-140), 13 (142-147);

  Texture    : SPARSELY PHYRIC;

  Structure  : SMECTITE VEINS ON JOINTS AND FRACTURES, CALCITE-
               SMECTITE VEINS IN PCE 6, MASSIVE;

  Alteration : FRESH;

  Comments   : LIGHT GREY, SIMILAR TO 16-5;

  Vesicles   : Size(mm):            Percent:     0

  Phenocrysts:                           (  <<3%)
               Size(mm):       TO 4

  Replacement: SMECTITE

               CALCITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   178.00
Core:  17   Top of Core Depth (m)  :   175.00
Sect:  2    Top of Section Depth(m):   176.50

LITHOLOGY: PLAG MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (2-9), 2 (11-18), 3 (20-36), 4 (42-60),
               5 (62-69), 6 (70-75), 7 (76-80), 8 (83-89),
               9 (91-108), 10 (110-115), 11 (117-121),
               12 (123-127), 13 (131-147);

  Texture    : MOD PHYRIC, PCE 2 HAS GLOMEROPHYRIC(?) CLOTS, SOME
               PCES SEEM TO HAVE MORE OR FRESHER GLASS IN
               MESOSTASIS;

  Structure  : LITTLE OR NO CALCITE VEINING, SEVERAL FRACTURES
               COATED BY GREEN SMECTITE, MASSIVE;

  Alteration : FRESH;

  Comments   : CONTINUED FROM PREVIOUS SECTION;

  Vesicles   : Size(mm):            Percent:     2

  Phenocrysts: PLAGIOCLASE               (  1-3%)
               Size(mm):        1-2
               VARIABLE DISTRIBUTION, IN PCE 2 MAY BE
               GLOMEROPHYRIC CLOTS;

  Replacement: CALCITE

               SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/  50  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   184.05
Core:  18   Top of Core Depth (m)  :   184.00
Sect:  1    Top of Section Depth(m):   184.00

LITHOLOGY: SEDIMENT;

  Piece No.  : PCE A (0-6);


Leg : 65    Top/Bottom Interval(mm):  800/1400  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   185.40
Core:  18   Top of Core Depth (m)  :   184.00
Sect:  1    Top of Section Depth(m):   184.80

LITHOLOGY: GLASSY BASALT;

  Piece No.  : PCE 2 (8-14);

  Texture    : FINE GRAINED, GLASSY, COOLING MARGIN;

  Alteration : FRESH
               SULFIDE COATING ON EDGE;

  Vesicles   : Size(mm):     10X3   Percent:
               Location:        CAL Filling: CITE, SULFIDE
               AMYGDULES;

  Replacement: CALCITE

               SULFIDE
               SULFIDE IS DISSEMINATED;


Leg : 65    Top/Bottom Interval(mm): 1400/1500  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   185.50
Core:  18   Top of Core Depth (m)  :   184.00
Sect:  1    Top of Section Depth(m):   185.40

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;

  Piece No.  : PCES 3 (15-29), 4 (30-45), 5 (38-46), 6 (47-58),
               7 (60-63), 8 (65-71), 9 (74-80), 10 (84-87),
               11 (90-98), 12 (100-105), 13 (105-107),
               14 (110-115), 15 (118-125), 16 (127-135),
               17 (135-140), 18 (144-150);

  Texture    : SPARSELY PHYRIC, GROUNDMASS BECOMES COARSER DOWN
               FROM COOLING MARGIN;

  Alteration : FRESH;

  Vesicles   : Size(mm):            Percent:   <.5
               VESICLES VERY SMALL AND SPARSE;

  Phenocrysts: PLAGIOCLASE               (    2%)
               Size(mm):        1-2


Leg : 65    Top/Bottom Interval(mm):    0/1080  Analyst: Morrison, M. Ann
Hole: 482B  Sample Midpoint (m)    :   186.58
Core:  18   Top of Core Depth (m)  :   184.00
Sect:  2    Top of Section Depth(m):   185.50

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (2-5), 2 (7-13), 3 (15-20), 4 (22-26),
               5 (27-32), 6 (34-40), 7 (42-57), 8 (60-73),
               9 (74-77), 10 (80-92), 11 (94-102), 12 (103-107);

  Texture    : SPARSELY PHYRIC;

  Structure  : SMECTITE-CALCITE VEINS IN PCES 8-9, MASSIVE;

  Alteration : FRESH;

  Comments   : GREY, DARKER IN COLOR THAN BASALT IN CORE 17;

  Vesicles   : Size(mm): .5-.1-.2   Percent:
               Location:            Filling: SMECTITE
               PCES 1-6 VESICULAR, AMYGDULES DECREASE IN SIZE AND
               ABUNDANCE FROM PCE 1 TO PCE 6;

  Phenocrysts: PLAGIOCLASE               (  1-3%)

  Replacement: SMECTITE

               CALCITE


Leg : 65    Top/Bottom Interval(mm):    0/ 400  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   193.40
Core:  19   Top of Core Depth (m)  :   193.00
Sect:  1    Top of Section Depth(m):   193.00

LITHOLOGY: APHYRIC BASALT FRAGMENT;

  Piece No.  : PCE 1 (2-4);

  Texture    : QUENCHED, GLASSY, APHYRIC, FRAGMENT;

  Alteration : FRESH;

  Comments   : PROBABLY CHILLED MARGIN FROM UNIT IN PREVIOUS CORE
               SECTION;


Leg : 65    Top/Bottom Interval(mm):   50/ 200  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   193.20
Core:  19   Top of Core Depth (m)  :   193.00
Sect:  1    Top of Section Depth(m):   193.05

LITHOLOGY: SEDIMENT;

  Piece No.  : PCES 2 (6-10), 3 (12-18);


Leg : 65    Top/Bottom Interval(mm):  200/ 220  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   193.22
Core:  19   Top of Core Depth (m)  :   193.00
Sect:  1    Top of Section Depth(m):   193.20

LITHOLOGY: BASALT FRAGMENT;

  Piece No.  : PCE 4 (20-21);

  Texture    : SMALL FRAGMENT;

  Alteration : FRESH;


Leg : 65    Top/Bottom Interval(mm):  250/ 600  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   193.60
Core:  19   Top of Core Depth (m)  :   193.00
Sect:  1    Top of Section Depth(m):   193.25

LITHOLOGY: SEDIMENT FRAGMENT;

  Piece No.  : PCE 5 (25-60);


Leg : 65    Top/Bottom Interval(mm):  600/1500  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   194.50
Core:  19   Top of Core Depth (m)  :   193.00
Sect:  1    Top of Section Depth(m):   193.60

LITHOLOGY: PLAG MOD PHYRIC BASALT;

  Piece No.  : PCES 6 (62-70), 7 (71-80), 8 (83-86), 9 (87-100),
               10 (104-113), 11 (113-125), 12 (127-138),
               13 (140-144), 14 (145-150);

  Texture    : PCES 7-14 HAVE INCREASING GRAIN SIZE, QUENCHED,
               GLASSY;

  Structure  : SULFIDE DEPOSITED IN CRACKS, FRACTURES, FEW FINE
               CALCITE VEINS;

  Alteration : FRESH;

  Comments   : PCE 7-14 ARE SIMILAR TO PCE 6 BUT WITH INCREASING
               GRAIN SIZE, PCE 6 DOWNWARDS REPRESENTS A NEW COOLING
               UNIT;

  Phenocrysts: PLAGIOCLASE               (  3-5%)

  Replacement: SULFIDE

               CALCITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Schmincke, H.
Hole: 482B  Sample Midpoint (m)    :   199.00
Core:  20   Top of Core Depth (m)  :   197.50
Sect:  1    Top of Section Depth(m):   197.50

LITHOLOGY: PLAG MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (2-5), 2 (6-20), 3A (21-26), 3B (26-33),
               4 (35-45), 5 (47-55), 6 (56-62), 7 (64-68),
               8 (71-76), 9 (77-86), 10 (87-94), 11 (96-110),
               12 (114-117), 13 (120-129), 14 (131-150);

  Texture    : MOD PHYRIC, PCES 1-9 MAY HAVE ALTERED GROUNDMASS
               GLASS PATCHES?;

  Structure  : VEINLETS DECREASE IN SULFIDE DOWNWARDS, SOME SMALL
               BROKEN PCES HAVE SLICKENSIDED SURFACES MASSIVE;

  Alteration : SLIGHTLY
               ROCK BECOMES FRESHER DOWNWARDS BY BECOMING LIGHTER
               IN COLOR LOSING THE MOTTLED TEXTURE COMMON IN PCES
               1-9(ALTERED GROUNDMASS GLASS PATCHES?) AND
               DECREASE OF SULFIDE IN VEINLETS AND GROUNDMASS,
               SMALL BROKEN PCES ARE MORE ALTERED THAN MASSIVE
               BASALT BY SHOWING GREENISH-YELLOW COATING DULL
               LUSTER ABUNDANT SULFIDE AND SOME HAVE SLICKENSIDED
               SMECTITE(?) SURFACES;

  Comments   : DARK GREY, SIMILAR TO 19-1;

  Vesicles   : Size(mm):            Percent:   <<1
               Location:            Filling: CLAY
               VESICLES ARE <<1% EXCEPT PCE 4 WHICH HAS UP TO 5%
               NEAR TOP, FILLING IS DARK GREEN CLAY AT RIM
               BECOMING VERY LIGHT IN CENTRE;

  Phenocrysts: PLAGIOCLASE               (   <1%)
               Size(mm):         <5

  Groundmass : GLASS
               ALTERED GROUNDMASS GLASS PATCHES?;

  Replacement: SULFIDE

               CLAY
               DARK GREEN CLAY BECOMING LIGHTER TOWARDS CENTRE;

               SMECTITE
               ID SMECTITE UNCERTAIN, AT SLICKENSIDED SURFACES;

               CARBONATE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Schmincke, H.
Hole: 482B  Sample Midpoint (m)    :   200.50
Core:  20   Top of Core Depth (m)  :   197.50
Sect:  2    Top of Section Depth(m):   199.00

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;

  Piece No.  : PCES 1 (2-13), 2 (15-28), 3 (30-41), 4 (44-51),
               5 (55-69), 6 (72-82), 7A (84-87), 7B (88-95),
               8 (97-113), 9 (116-125), 10 (126-140), 11 (141-150);

  Texture    : MEDIUM TO FINE GRAINED WITH PCES(7A,B) MORE FINE
               GRAINED, SOME GLOMEROCRYSTS;

  Structure  : SLIGHT INCREASE IN FRACTURING, GREEN SMECTITE(?) IN
               MANY PCES SLICKENSIDED FILLING VEINLETS GENERALLY IN
               CENTRE;

  Alteration : SLIGHTLY
               SLIGHT INCREASE IN ALTERATION;

  Comments   : DARK TO MEDIUM GREY, CONTINUATION FROM 20.1, PCE(7A-
               B) POSSIBLY TOP OF NEW COOLING UNIT OF SIMILAR
               LITHOLOGY;

  Phenocrysts: PLAGIOCLASE               (   <1%)
               Size(mm):         <5

  Replacement: SMECTITE
               GREEN WITH WAXY LUSTER, PERVASIVE IN GROUNDMASS;

               SULFIDE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Schmincke, H.
Hole: 482B  Sample Midpoint (m)    :   202.00
Core:  20   Top of Core Depth (m)  :   197.50
Sect:  3    Top of Section Depth(m):   200.50

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-9), 2 (11-20), 3 (22-28), 4 (29-40),
               5 (42-53), 6 (55-84), 7 (85-92), 8 (94-100),
               9 (104-110), 10 (114-119), 11 (120-127),
               12 (130-135), 13 (137-150);

  Texture    : FINE TO MEDIUM GRAINED WITH PCES 8-13 MORE FINE
               GRAINED;

  Structure  : FRACTURES VERY COMMON IN SOME PCES(7) FILLED CHEIFLY
               WITH GREEN SLICKENSIDED SMECTITE(?), MANY PCES IN 6
               BREAK EASILY WITH CLAY AND SULFIDE ALONG FRACTURES,
               RARE CARBONATE ALONG HAIRLINE FRACTURES, MASSIVE;

  Alteration : SLIGHTLY
               MOTTLED TEXTURE DOMINANT IN PCES 1-7(ALTERED
               PATCHES OF GROUNDMASS GLASS?);

  Comments   : GREY, SIMILAR LITHOLOY TO PREVIOUS UNITS WITH AT
               LEAST ONE POSSIBLE COOLING BREAK, PCE 12 VERY FINE
               GRAINED (NEW COOLING UNIT?);

  Phenocrysts: PLAGIOCLASE               (   <1%)
               Size(mm):         <5

  Replacement: SMECTITE
               ID SMECTITE UNCERTAIN AND GREEN SLICKENSIDED;

               CLAY

               SULFIDE

               CARBONATE
               RARE;


Leg : 65    Top/Bottom Interval(mm):    0/  50  Analyst: Zolotarev, B.
Hole: 482B  Sample Midpoint (m)    :   202.05
Core:  21   Top of Core Depth (m)  :   202.00
Sect:  1    Top of Section Depth(m):   202.00

LITHOLOGY: SEDIMENT;

  Piece No.  : PCE 1 (2-4);


Leg : 65    Top/Bottom Interval(mm):   70/1500  Analyst: Zolotarev, B.
Hole: 482B  Sample Midpoint (m)    :   203.50
Core:  21   Top of Core Depth (m)  :   202.00
Sect:  1    Top of Section Depth(m):   202.07

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 2 (7-9), 3A (11-20), 3B (20-27), 4 (30-38),
               5 (41-44), 6 (46-50), 7 (52-58), 8 (60-66),
               9 (68-74), 10 (75-80), 11 (82-89), 12 (91-100),
               13 (100-106), 14 (109-133), 15 (115-212),
               16A (123-131), 16B (130-14), 16C (145-148);

  Texture    : FINE GRAINED, SPARSELY PHYRIC;

  Structure  : FRACTURES FILLED WITH  GREENISH DARK MATERIAL(SMEC &
               ZEOLITE?) ARE VERY COMMON IN PCES 3-8 & 16, MASSIVE;

  Alteration : FRESH;

  Vesicles   : Size(mm):            Percent:     0

  Phenocrysts: PLAGIOCLASE               (   <1%)
               Size(mm):        1-4

  Replacement: SMECTITE

               ZEOLITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Schmincke, H.
Hole: 482B  Sample Midpoint (m)    :   205.00
Core:  21   Top of Core Depth (m)  :   202.00
Sect:  2    Top of Section Depth(m):   203.50

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (2-6), 2 (9-16), 3 (18-35), 4A (37-50),
               4B (50-56), 5A (57-66), 5B (65-74), 6A (75-80),
               6B (80-86), 6C (87-92), 6D (93-98), 6E (100-105),
               7 (107-115), 8 (106-125), 9 (127-132), 10 (134-142),
               11 (145-150);

  Texture    : MEDIUM GRAINED, SPARSELY PHYRIC;

  Structure  : SOME HAIRLINE FRACTURES GENERALLY FILLED WITH SMECT
               CARB & SULFIDE, VEINLET 1-2MM THICK IN CENTRE OF
               PCES 6C-D MOSTLY SILICA(?) FILLED WITH SOME CARB &
               SMECTITE, MASSIVE;

  Alteration : FRESH
               APPEARS FRESHER THAN CORE 20;

  Comments   : GREY, SECTION CONTINUES FROM 21-1 BUT IS SLIGHTLY
               COARSER GRAINED AND CONTINUES INTO 21-3;

  Vesicles   : Size(mm):      <.5   Percent:   <10
               Location:            Filling: SMECTITE
               Shape   : ROUND TO

               Location:            Filling:
               Shape   : IRREGULAR
               ID GREEN SMECTITE UNCERTAIN;

  Phenocrysts:                           (   <3%)
               Size(mm):         <5

  Replacement: SMECTITE

               CARBONATE

               SILICA

               SULFIDE


Leg : 65    Top/Bottom Interval(mm):    0/ 500  Analyst: Zolotarev, B.
Hole: 482B  Sample Midpoint (m)    :   205.50
Core:  21   Top of Core Depth (m)  :   202.00
Sect:  3    Top of Section Depth(m):   205.00

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (2-5), 2 (8-15), 3 (18-21), 4 (25-47);

  Texture    : MEDIUM GRAINED, SPARSELY PHYRIC;

  Structure  : FRACTURES VERY RARE AND FILLED WITH GREENISH DARK
               MATERIAL (SMECTITE & ZEOLITE?);

  Alteration : FRESH;

  Comments   : SAMPLES SAME AS 21-2, GREY;

  Phenocrysts: PLAGIOCLASE               (    1%)
               Size(mm):     TO 3-4

  Replacement: SMECTITE

               ZEOLITE
               ID UNCERTAIN OF SMECTITE AND ZEOLITE;


Leg : 65    Top/Bottom Interval(mm):  520/1370  Analyst: Zolotarev, B.
Hole: 482B  Sample Midpoint (m)    :   206.37
Core:  21   Top of Core Depth (m)  :   202.00
Sect:  3    Top of Section Depth(m):   205.52

LITHOLOGY: PLAG-CPX MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 5 (52-57), 6 (59-62), 7 (64-70), 8 (73-82),
               9 (79-85), 10 (87-94), 11A (96-105), 11B (105-107),
               12 (111-117), 13 (120-126), 14 (130-137);

  Texture    : FINE GRAINED, SPARSELY PHYRIC, PCE 5 IS VERY FINE
               GRAINED WITH PCE 6 A LITTLE COARSER;

  Structure  : PCES 7-14 FEW THIN FRACTURES FILLED WITH CLAY
               MINERALS, MASSIVE;

  Alteration : FRESH;

  Comments   : PCE 5 POSSIBLY TOP OF NEW COOLING UNIT OF SIMILAR
               LITHOLOGY;

  Vesicles   : Size(mm):            Percent:   <.5
               PCES 5 & 6, FILLED WITH DARK MATERIAL;

  Phenocrysts: PLAGIOCLASE               (  2-5%)
               Size(mm):      1.5-4
               PCES 5 & 6 2-3% UP TO 1.5MM AND PCES 7-14 5% WITH
               SIZES UP TO 3-4MM;

               CLINOPYROXENE             (  <<1%)
               Size(mm):      1-1.5
               PCES 7-14 UP TO 1.5MM;

  Replacement: CLAY


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Schmincke, H.
Hole: 482B  Sample Midpoint (m)    :   203.50
Core:  21   Top of Core Depth (m)  :   202.00
Sect:  1    Top of Section Depth(m):   202.00

LITHOLOGY: PLAG-CPX MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (2-10), 2A (12-20), 2B (20-25), 3 (28-34),
               4 (35-45), 5 (47-55), 6 (56-65), 7A (66-77),
               7B (78-88), 7C (89-95), 8 (97-105), 9 (108-115),
               10A (117-123), 10B (124-130), 11 (133-130),
               12 (142-150);

  Texture    : FINE TO MEDIUM GRAINED WITH GRAIN SIZE DECREASING
               SLIGHTLY DOWNWARDS IN SECTION;

  Structure  : HAIRLINE FRACTURES HAVE ONLY A THIN SMECTITE(?)
               COATING, CLAY FROM SOME VEINS ARE IN A SEPARATE
               VIAL, MASSIVE;

  Alteration : FRESH
               VERY;

  Comments   : GREY;

  Vesicles   : Size(mm):      0.3   Percent:    <5
               Location:            Filling: SMECTITE
               Shape   : ROUND
               SMALL ROUND MAY BE SMECTITE-FILLED BELOW PCE 4;

  Phenocrysts: PLAGIOCLASE               (   <5%)
               Size(mm):         <5

               CLINOPYROXENE
               Size(mm):        <<1
               RARE GREEN TRANSLUSCENT CPX PHENOS;

  Replacement: CLAY

               SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Morrison, M. Ann
Hole: 482B  Sample Midpoint (m)    :   214.00
Core:  22   Top of Core Depth (m)  :   211.00
Sect:  2    Top of Section Depth(m):   212.50

LITHOLOGY: PLAG-CPX-OL MOD PHYRIC BASALT;

  Piece No.  : PCES 1 (2-10), 2 (11-15), 3 (18-27), 4 (28-27),
               5 (40-50), 6 (51-61), 7A (64-74), 7B (74-76),
               8 (78-84), 9 (85-90), 10 (92-100), 11 (101-107),
               12 (109-114), 13 (117-128), 14 (130-136),
               15 (138-142);

  Texture    : FINE TO MEDIUM GRAINED, PHYRIC;

  Structure  : CLAY COATING ON VEINS ESPECIALLY IN PCES(3,6,7,13)
               1-2MM WIDE, HARILINE FRACURES SOME WITH CLAY
               COATING AND CLAYS HAVE POSSIBLE SLICKENSIDES;

  Alteration : FRESH
               OL SLIGHTLY ALTERED, CLAYS ARE GREEN SMECTITES
               SOME WITH OXIDIZED AREAS(?);

  Comments   : GREY, COMBINATION OF UNIT IN 22-1;

  Vesicles   : Size(mm):            Percent:     0
               NONE OBVIOUS;

  Phenocrysts: PLAGIOCLASE               (   <5%)
               Size(mm):         <5
               SLIGHTLY MORE IN UPPER PART SECTION;

                                         (   <1%)
               VERY RARE;

               OLIVINE                   (   <1%)
               SMALL GREEN PATCHES COULD BE MICROPHENOS;

  Replacement: SMECTITE
               GREEN SMECTITES SOME WITH OXIDIZED AREAS WITH
               BROWN SMECTITES;


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Morrison, M. Ann
Hole: 482B  Sample Midpoint (m)    :   215.50
Core:  22   Top of Core Depth (m)  :   211.00
Sect:  3    Top of Section Depth(m):   214.00

LITHOLOGY: PLAG-PYX-OL MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (2-6), 2 (8-12), 3 (15-20), 4 (22-30),
               5 (31-36), 6 (37-44), 7 (46-5), 8 (60-67),
               9 (67-78), 10 (80-83), 11 (85-92), 12 (94-107),
               13 (110-115), 14 (119-125), 15 (127-135),
               16 (137-146);

  Texture    : PHYRIC, PYX & PLAG SOME IN GLOMEROPHYRIC CLUSTERS;

  Structure  : THIN SMECTITE COATED VEINS(NOT AS MANY AS 22-2),
               MASSIVE;

  Alteration : FRESH;

  Comments   : GREY, CONTINUATION OF UNIT 22-2 BUT RICHER IN GREEN
               PYX & SMALL OL;

  Phenocrysts: PLAGIOCLASE               ( 5-10%)

               PYROXENE                  (  1-2%)
               Size(mm):       TO 2

               OLIVINE
               SMALL;

  Replacement: SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/1150  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   216.65
Core:  22   Top of Core Depth (m)  :   211.00
Sect:  4    Top of Section Depth(m):   215.50

LITHOLOGY: PLAG-OL-CPX MOD PHYRIC BASALT;

  Piece No.  : PCES 1 (1-13), 2 (16-25), 3 (28-39),4 (40-46),
               5A (49-63), 5B (64-69), 6 (71-85), 7 (86-97),
               8 (98-107), 9 (110-115);

  Texture    : PHYRIC, CPX IN GLOMEROPHYRIC CLOTS WITH PLAG IN PCES
               1-6, GROUNDMASS GETS COARSER & SEEMS TO CONTINUE DOW
               IN SECTION EXCEPT FOR PCE 9-FINER GRAINED;

  Structure  : PCE 9 SHOWS FRACTURE SURFACE GENERALLY COATED WITH
               GREEN SMECTITE, SULFIDE/AMORPHOUS SILICA, CALCITE;

  Alteration : FRESH
               PCE 9 IS ALTERED;

  Comments   : LITHOLOGY CONTINUOUS INCREASINGLY PHYRIC WITHOUT ANY
               DEFINITE LITHOLOGIC BREAK OR COOLING MARGIN;

  Phenocrysts: COMBINATION               ( 5-10%)
               Size(mm):        1-2

                                         ( ATHS%)
               Size(mm): IN PCES 1-

                                         ( WITH%)
               Size(mm):  CPX, PLAG

               OLIVINE                   ( 1-3 %)
               Size(mm):        <1
               APPEARS APPARENTLY IN LOCALIZED PATCHES AS
               MICROPHENOS IN PCE 1-6;

               CLINOPYROXENE
               GLOMEROPHYRIC CLOTS WITH PLAG;

  Replacement: SMECTITE

               SULFIDE

               SILICA
               AMORPHOUS;

               CALCITE


Leg : 65    Top/Bottom Interval(mm):    0/ 300  Analyst:
Hole: 482B  Sample Midpoint (m)    :   220.30
Core:  23   Top of Core Depth (m)  :   220.00
Sect:  1    Top of Section Depth(m):   220.00

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCES 1 (3-6), 2 (12-17), 3 (23-30);

  Texture    : APHYRIC, SMALL GLOMEROPHYRIC CLUSTERS (1MM) WITH
               PLAG & PYX VISIBLE, FINER-GRAINED THAN 22-4;

  Structure  : HAIRLINE FRACTURES WITH SMECTITE COATINGS;

  Alteration : FRESH;

  Comments   : GREY;

  Phenocrysts: PLAGIOCLASE               (   <1%)
               Size(mm):          2
               RARE PLAG PHENOS IN PCE 2;


Leg : 65    Top/Bottom Interval(mm):    0/ 250  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   224.75
Core:  24   Top of Core Depth (m)  :   224.50
Sect:  1    Top of Section Depth(m):   224.50

LITHOLOGY: SEDIMENT;

  Piece No.  : PCE 1 (1-24);


Leg : 65    Top/Bottom Interval(mm):  250/1400  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   225.90
Core:  24   Top of Core Depth (m)  :   224.50
Sect:  1    Top of Section Depth(m):   224.75

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 2 (25-29), 3A (30-49), 3B (47-59), 4 (60-64),
               5A (76-97), 5B (97-103), 6 (105-118), 7 (120-135);

  Texture    : PCE 2 IS FINE GRAINED, GLASSY(?), PCES 2-7 ARE
               PHYRIC, ACICULAR PLAG IN GROUNDMASS;

  Structure  : FRACTURE SURFACES COATED WITH SMECTITE & CALCITE,
               SOME UNFILLED HAIRLINE CRACKS, MASSIVE;

  Alteration : FRESH;

  Comments   : PCE 2 COULD BE TOP OF NEW COOLING UNIT;

  Vesicles   : Size(mm):            Percent:   <.5
               Location:  1-5       Filling:  SMECTITE
               AMYGDULES FILLED WITH GREEN SMECTITE WITH INCREASE
               IN CONCENTRATION DOWNCORE;

  Groundmass : PLAGIOCLASE
               ACICULAR;

  Replacement: SMECTITE

               CALCITE


Leg : 65    Top/Bottom Interval(mm):    0/1450  Analyst: Flower, M.
Hole: 482B  Sample Midpoint (m)    :   227.45
Core:  24   Top of Core Depth (m)  :   224.50
Sect:  2    Top of Section Depth(m):   226.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (1-50), 2 (32-37), 3 (42-48), 4 (51-55),
               5A (57-64), 5B (56-67), 6 (69-75), 7 (76-81),
               8 (82-87), 9 (88-95), 10 (98-102), 11A (104-116),
               11B (115-124), 11C (123-129), 12 (130-137),
               13 (140-145);

  Texture    : APHYRIC, PCE 1 ODD FRAGMENTS COATED BY SMECTITE;

  Structure  : MASSIVE;

  Alteration : FRESH;

  Comments   : LITHOLOGY CONTINUED FROM PREVIOUS CORE SECTION, DARK
               GREY;

  Vesicles   : Size(mm):     TO 5   Percent:
               Location:            Filling: SMECTITE,CALCITE
               SPORADIC LARGE VESICLES WITH PCE 10 & 13 LINED
               WITH SMECTITE AND PCE 9 CALCITE;

  Replacement: SMECTITE

               CALCITE


Leg : 65    Top/Bottom Interval(mm):    0/1300  Analyst:
Hole: 482B  Sample Midpoint (m)    :   228.80
Core:  24   Top of Core Depth (m)  :   224.50
Sect:  3    Top of Section Depth(m):   227.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (3-13), 2 (15-16), 3A (28-41), 3B (40-45),
               4 (47-60), 5 (60-75), 6 (76-90), 7 (93-107),
               8 (107-120), 9A (121-127), 9B (124-130);

  Texture    : APHYRIC, FINE GRAINED;

  Structure  : SMECTITE VEINS 2MM WIDE IN PCES 9A, MASSIVE;

  Alteration : FRESH
               THIN 1MM ALTERATION HALO IN PCE 9A;

  Comments   : GREY, SIMILAR IN APPEARANCE TO 24-1 & 24-2;

  Vesicles   : Size(mm):            Percent:   1-2
               Location:            Filling: SMECTITE
               PCES(1,5,7,8) HAVE O.6MM VESICLES;

  Replacement: SMECTITE


    

Introduction


Cite as: Deep Sea Drilling Project (1989): Archive of Core and Site/Hole Data and Photographs from the Deep Sea Drilling Project (DSDP). National Geophysical Data Center, NOAA. doi:10.7289/V54M92G2 [access date]

These Web pages are from the Core Data from the Deep Sea Drilling Project Legs 1-96 CD-ROM produced in 1989 and modified in 2000 by the U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, National Geophysical Data Center (now part of the National Centers for Environmental Information), and collocated World Data Center for Marine Geology and Geophysics, Boulder (now part of the World Data Service for Geophysics). Data were compiled in cooperation with the U.S. Science Support Program, of the Joint Oceanographic Institutions, Inc. (now the Consortium for Ocean Leadership), and the U.S. National Science Foundation.

Please see NOAA's privacy and disclaimer information. Send questions or comments to mgg.info@noaa.gov.

Department of Commerce > NOAA > NESDIS > NCEI > doi:10.7289/V54M92G2